[Linphone-developers] VP8 Codec in Linphone

[王聡]

Hey all,

Recently I want to record video calls on my FreeSWITCH server, and my client was built based on Linphone Core. Once I started recording on FS server, the video disappeared and only black screen remained.

Further research on FS server shows an unsupported stream received from client, which likes:

[ALERT] switch_vpx.c:1240 Error decoding 1579 bytes, [5:Bitstream not supported by this decoder:(null)]

It seems like the key frame missing or unsupported keyframe sent.

The H264 video call can be recorded correctly. I had tested Bria Softphone and got an available recording, so I think it would be something wrong on Linphone’s VPX codec, but I can’t find related codes.

Anyone had any idea?

Regards.